PCL is an acronym for Printer Control Language, and is the language on which
the HP LaserJet Plus is based. PCL lacks the overall power of PostScript, but
is adequate for standard printing needs.
Apple's emulation of the HP LaserJet Plus is not perfect. Pages 118 and 119 of
the LaserWriter IINT/NTX Owner's Guide (Apple Part #030-3215-A) explain the
differences.
Because we do not emulate PCL perfectly, you may encounter some problems with
certain applications -- for instance, if you send the Hewlett Packard PCL
command to reset LaserJet Plus to LaserWriter IINTX while in LaserJet emulation
mode, the system may crash.
We strongly suggest that you test a LaserWriter IINTX in a PCL environment
before making a decision to go with this type of setup.